ffmpeg | branch: release/3.3 | Michael Niedermayer <mich...@niedermayer.cc> | Wed Feb 14 13:01:46 2018 +0100| [659a23e89fbaf649f8984a9d5dfd5479e5a37386] | committer: Michael Niedermayer
avcodec/exr: Check remaining bits in last get code loop Fixes: runtime error: shift exponent -7 is negative Fixes: 3902/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-6081926122176512 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit dd8351b1184b8054925c28ecc5fcb6dbbc177fad) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=659a23e89fbaf649f8984a9d5dfd5479e5a37386 --- libavcodec/exr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/exr.c b/libavcodec/exr.c index fe978805c5..b27132d6bb 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -574,7 +574,7 @@ static int huf_decode(const uint64_t *hcode, const HufDec *hdecod, while (lc > 0) { const HufDec pl = hdecod[(c << (HUF_DECBITS - lc)) & HUF_DECMASK]; - if (pl.len) { + if (pl.len && lc >= pl.len) { lc -= pl.len; get_code(pl.lit, rlc, c, lc, gb, out, oe, outb); } else { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
